VulnerabilityPatcher/src/main/java/me/cooljwb/vulnerabilitypatcher/patches/Crash_Egg.java

package me.cooljwb.vulnerabilitypatcher.patches;

import org.apache.commons.lang.builder.ReflectionToStringBuilder;
import org.bukkit.block.Container;
import org.bukkit.craftbukkit.v1_13_R2.inventory.CraftItemStack;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockDispenseEvent;
import org.bukkit.inventory.ItemStack;

import java.util.logging.Level;
import java.util.logging.Logger;

/*
 * Copyright 2019 CoolJWB
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @author CoolJWB
 */

public class Crash_Egg extends Patches implements Listener {

    private Logger log = Logger.getLogger("Minecraft");

    @EventHandler(priority = EventPriority.HIGHEST)
    public void onBlockDispenseEvent(BlockDispenseEvent event) {
        ItemStack item = event.getItem();

        if(item != null) {
            if (isCrashEgg(item)) {
                event.setCancelled(true);
                Container container = (Container) event.getBlock().getState();

                for(int c = 0; c < container.getInventory().getSize(); c++) {
                    if(container.getInventory().getItem(c) != null) {
                        if (container.getInventory().getItem(c).isSimilar(event.getItem()))
                            container.getInventory().getItem(c).setItemMeta(null);
                    }
                }

                notifyViolation(event.getBlock().getType().name(), "drop", "crash egg", event.getBlock().getLocation());
            }
        }

        if(devmode)
            log.log(Level.INFO, String.format("[%s] Event: %s", pluginName, ReflectionToStringBuilder.toString(event)));
    }

    public boolean isCrashEgg(ItemStack item) {
        if(item != null) {
            net.minecraft.server.v1_13_R2.ItemStack nmsItemStack = CraftItemStack.asNMSCopy(item);

            if(nmsItemStack != null && nmsItemStack.getTag() != null) {
                if(nmsItemStack.getTag().getCompound("EntityTag").getString("id").equalsIgnoreCase("minecraft:lightning_bolt"))
                    return true;
            }
        }
        return false;
    }
}